Registro DMARC
v=spf1 include:_spf.verygoodemail.com ~all

Registro IPv4
host: f2s.com
class: IN
ttl: 21600
type: A
ip: 212.74.99.36

Servidores DNS Principal (mname) y Secundario (rname)
host: f2s.com
class: IN
ttl: 21600
type: SOA
mname: dns0.apm-internet.net
rname: hostmaster.apm-internet.net
serial: 2025052801
refresh: 10800
retry: 3600
expire: 2419200
minimum-ttl: 86400

Servidor de Correo
host: f2s.com
class: IN
ttl: 7616
type: MX
pri: 10
target: b.mx.verygoodemail.com

Servidor de Correo
host: f2s.com
class: IN
ttl: 7616
type: MX
pri: 10
target: a.mx.verygoodemail.com

Información TXT
host: f2s.com
class: IN
ttl: 21600
type: TXT
txt: v=spf1 include:_spf.verygoodemail.com ~all
entries: Array